Yes, there are funds available specifically for producing captioning. While the U.S. Department of Education  is still the major source of caption funding, with $19 million available annually, a good deal of captioning today is made possible by corporate support. Corporate contributions supplement or match those allotted by a program's producer and its distributor (i.e., the broadcast or cable network or syndicator). The Caption Center maintains a list of programs available for corporate caption sponsorship. Contact the Media Access Group  for more information about becoming a corporate sponsor, or to learn more about grant-funding opportunities.
Some small businesses may also be eligible for a federal tax credit for providing captioning. For more information consult Tax Benefits for Businesses Who Have Employees with Disabilities 
To locate captioning service providers consult the DO-IT Knowledge Base article, Where can I find vendors who provide captioning services? 
For more information on viewing captions consult the DO-IT Knowledge Base articles, Can all television sets display closed captions?  and What is the difference between open and closed captioning? 
For guidance on creating captions consult the following DO-IT Knowledge Base article, What are some guidelines for creating attractive and functional open or closed captions? 
-  U.S. Department of Education
-  Media Access Group
-  Tax Benefits for Businesses Who Have Employees with Disabilities
-  Where can I find vendors who provide captioning services?
-  Can all television sets display closed captions?
-  What is the difference between open and closed captioning?
-  What are some guidelines for creating attractive and functional open or closed captions?